UBUNTU-CVE-2026-111273

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Source
https://ubuntu.com/security/CVE-2026-111273
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-111273.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-111273
Upstream
Published
2026-10-16T00:00:00Z
Modified
2026-10-17T12:58:04Z
Severity
  • 6.1 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:H CVSS Calculator
  • 6.9 (Medium) CVSS_V4 - CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

unarr through 1.1.1 contains an off-by-one heap-based buffer overflow in tar_get_name() in tar/parse-tar.c, reachable through the ar_entry_get_name() API. Attackers can supply a crafted TAR archive with a full ustar prefix and name to write a NUL byte past the allocation, corrupting heap memory and crashing the process.

References

Affected packages

Ubuntu:20.04:LTS / unarr

Package

Name
unarr
Purl
pkg:deb/ubuntu/unarr?arch=source&distro=focal

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

1.*
1.0.1-1

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "libunarr1",
            "binary_version":  "1.0.1-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-111273.json"

Ubuntu:22.04:LTS / unarr

Package

Name
unarr
Purl
pkg:deb/ubuntu/unarr?arch=source&distro=jammy

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

1.*
1.0.1-1

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "libunarr1",
            "binary_version":  "1.0.1-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-111273.json"

Ubuntu:24.04:LTS / unarr

Package

Name
unarr
Purl
pkg:deb/ubuntu/unarr?arch=source&distro=noble

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

1.*
1.0.1-1.1

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "libunarr1",
            "binary_version":  "1.0.1-1.1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-111273.json"